hotrodseth
New member
To start with I own a 2005 Honda bf150a with 290 hours. I have been fighting an issue all summer long, being that first starting out right after the battery has been connected, starting and taking off the motor will rev up all the way to around 5500rpm. It will stay there and run great but only for a few minutes. Then it will bog down and buzzer will sound and check engine light comes on. It will stay running but only to right about 4000 rpm. I can shut the engine off and restart and the check engine light will be off but will still only rev to 4000rpm. After 5 minutes or so the buzzer and check engine light come on again.
If I read the dtc code it's 23-1, which shows to be for the knock sensor. I have cleared it and it comes back the same as just disconnecting thr battery. I have read the factory service manual for the code and have ohmed the wire out and it's good to the ecm.
Could the knock sensor actually be bad, or could another sensor be the issue like 02 sensor (I have seen certain Hondas are bad about going through them) I have changed all fuel filters, spark plugs, both thermostats and impeller.
If I read the dtc code it's 23-1, which shows to be for the knock sensor. I have cleared it and it comes back the same as just disconnecting thr battery. I have read the factory service manual for the code and have ohmed the wire out and it's good to the ecm.
Could the knock sensor actually be bad, or could another sensor be the issue like 02 sensor (I have seen certain Hondas are bad about going through them) I have changed all fuel filters, spark plugs, both thermostats and impeller.